CVE-2026-21851 – MONAI has Path Traversal (Zip Slip) in NGC Private Bundle Download

CVE ID : CVE-2026-21851

Published : Jan. 7, 2026, 11:15 p.m. | 1 hour, 12 minutes ago

Description : MONAI (Medical Open Network for AI) is an AI toolkit for health care imaging. In versions up to and including 1.5.1, a Path Traversal (Zip Slip) vulnerability exists in MONAI’s `_download_from_ngc_private()` function. The function uses `zipfile.ZipFile.extractall()` without path validation, while other similar download functions in the same codebase properly use the existing `safe_extract_member()` function. Commit 4014c8475626f20f158921ae0cf98ed259ae4d59 fixes this issue.

Severity: 5.3 | MEDIUM

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